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The G83 cycle (often called peck drilling) is intended for deep drilling or milling with chip breaking. The retracts in this cycle clear the hole of chips and cut off any long stringers (which are common when drilling in aluminum).

The fact you are building your own engine from start to finish. Says a lot about your intelligence and work ethics. Can't wait to see how it turns out.

This is very interesting.. I do wonder how well I could machine or hone auto engine cylinders on a similar machine..

This has been a wonderful series on casting your own engine. I might want to start for auto parts eventually. But it's very interesting to watch.

The secret to hardening sand casted aluminum is cryo tempering. I had a 1953 HD, and one after market cylinder exploded, letting the piston cock sideways, and come down blowing the cases apart. A man who welded for NASA, tried welding the parts together, but on the thin sides of the case he got spider cracks that he chased forever. He told me he tried heating in an over and welding while still extremely hot, and still spider cracks. I read about race car drivers cryo tempering the engines, and parts. So I tried it. After the tempering, a union welder, came in and welded them up like it was modern aluminum. no cracks, worked like a charm. After welding the heat put different stresses in the metal, so I cryo tempered them, a final time after welding, and the engine is still running today, after being blown in to pieces, and put back together again. Try it, it is not expensive, and it the best thing that ever happened to sand casted aluminum

Nice work don't ever stop.

After watching your lost casting and subsequent machining, I had an idea that I was wondering if you’ve tried: Have you ever considered putting Heli-Coil threads into the foam casting along with white oak wooden dowels spun into their center as plugs but sticking out into the sand by around 4” to help secure their relative location as the supporting foam is lost? You wouldn’t need to worry about getting it lined up with the top since you’ll just be machining that surface flat anyway and the wood dowels will undergone a quick carburizing with little oxygen so they won’t burn away but their exterior in contact will quickly turn to charcoal making removal and cleanup simple and quick. I know nothing of lost foam casting and barely anything of traditional sand casting aluminum so I can understand if my thought fails at a fundamental level because of something like the high heat ruining temper of coils OR more technical challenges like the aluminum skin fails to bond with the exterior of the coil or the protruding coil may potentially disrupts the molten metals skin causing it to fold over and create defects which in turn could lead to voids or weakened sections at the location of the folding. Anyway just a passing thought, I enjoyed the video and was able to inference a few things based on how you made your fill channels.

I wonder what kinda crazy stuff that you and Alan Millyard could come up with…..

How can I pay you to Mod my 03 Sv1000s clutch basket? It’s fully modded except for a flash but that vibration is 😳.. Thank you in advance!

Is he making a con rod out of regular steel? It's bendable and to heavy. That will ne a balancing nightmare

is it a fork and blade con rod?

What material, steel?

Get a Datum point... Leave the Datsun that's on point fo l8r bro

This just popped up in recommended, I watch far too many machining video's but making a V-twin- cool stuff (I was a motorcycle mechanic at various dealers in 1970's~90's then taught at MMI Orlando almost 12 years). Love the irony of making IC engine from Tesla parts. What top ends are you going to use? I see you have slots for cam chain, looks like Honda pattern (XR200's?) Keeping the Kiwi tradition going, great stuff, I'll subscribe

Start using casting plaster it will help the finish...or making traditional molds with the foam removed before pouring...the sand you are using will only allow it to be so good always with minor defects

This channel deserves way more views and subscribers

😊 i like how it sounds

Shot bro! Sick video, love seeing how you do things. Keep it up

Que tipo de pintura recubriste ?

why don`t you melt out the foam from the sand before casting?

Nice castings. I've never tried lost foam castings before. I like that you don't need to worry about draft angles. Regards, Preso

Some of the coolest milling and casting work on TH-cam. Can't wait to see that engine run.

Awesome job! You have some serious skills looking forward to seeing more

Casting looks good considering the porous looking sand. How did the heat treat work ? T-? . Nice work

WOW 😍

Nice 👏

Good to hear a kiwi accent. What part of the country are you in?

I learnt something today! I have never seen casting in dry sand like that before.

Would a grove cut in the case half-mounting face for O-ring material be an effective oil seal?

At last... someone is doing something useful with a Tesla.

Nice Aprilia, I have a 2012 Tuono V4R here in Dunedin. Where abouts are you?

Just remember to not stop lying!¡! ngl ngl ngl ……

I wonder if there might be a way to preheat the sand prior to pouring. Obviously not very much, you wouldn’t want to risk damaging the pattern

I just found this channel yesterday and I’m quickly working through all of your old videos. I found Kelly’s videos years ago and I’m glad to see another young man willing to learn

Watching from Finland and liking your approach mate

Impressive

I cannot think of a better use of Tesla rims, or any other Tesla aluminium part come to think of it 😀. Nice work Jonny, keep up the greak work.

Strong work!!!

This is cool but you're losing the gearbox and clutch. Board track replicas accept classic preformance to have a classic design. Gonna go with no brakes like they used to? No throttle just cut the ignition to reduce speed like they used to.

Wondered where all the spoons from the smoko room went 😂

What's the difference between a mill and a mehw? It looks like mill.

Very nice work sir

Appreciate all the explaining of what's happening. It's looking good, all that experience from the first one seems to be coming into play

1 of 1 casting or 1 of 2 casting "gonna test my first ever gcode" i was like no no no no no 🤣

Really love this type of builds engine merging isnt a new thing and an easy thing but u make it seem so easy todo! hopefully you decide to make big displacement engines sometime in the future 500cc,600-1000cc love watching all your videos!

Take that goofy swivel base off that mill vise & bolt it straight to the mill table- you'll gain height and lose floppyness and have a more rigid setup

Some of the most impressive non-industrial casting I've seen.

This is such an awesome channel, keep it up!

entertaining and informative looking forward to the next update

Excellent work, looking at the finish you got on the mating faces of the case half's i think your heat treating exercise was a success